| 摘要 |
Disclosed is a combination hybrid splice sleeve which has a threaded end for making a mechanical joint with a male thread on a rebar end, and an opposite end open for receiving a second rebar, which need not be threaded, for making a grout joint between the sleeve and the second rebar. This sleeve has a tapering cross section between a wide end and a narrow end, with internal radial ridges of constant height spaced between the two opposite ends. A threaded cylindrical bore is axially aligned in the wide end for screwing to a first rebar. The narrow end is open for receiving a second rebar. Two grout ports open radially into the sleeve. The first grout port is near to the narrow end, and the second grout port is proximal to the threaded bore. The second grout port is of smaller aperture than the first grout port, for partially restricting out flow of grout injected through the first grout port, to encourage filling of the sleeve by building up some back pressure.
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